unacceptable

adj

1. Unsatisfactory; not acceptable.

   “"This shocking report proves once again that we urgently need a radical shake-up of hospital care," said Jeremy Hughes, chief executive of the Alzheimer's Society. "Given that people with dementia occupy a quarter of hospital beds and that many leave in worse health than when they were admitted, it is unacceptable that training in dementia care is not the norm."”

   “The British Transport Commission (BTC) was created to own not just the railways, but also London Underground, docks, inland waterways, and some road haulage activities. Its remit was to operate on a break-even basis, with sustained losses unacceptable.”

2. Not conforming to accepted usage.

noun

1. Something that is not acceptable.

   “Second, the data collected using CASEMAP afford us the opportunity to conduct market segmentation analyses based on the similarity in the pattern of unacceptables and/or the benefits that consumers seek in the category.”